Which of the following statements is false ?

a. Viruses contain DNA or RNA.
b. The nucleic acid of a virus is surrounded by a protein coat.
c. Viruses multiply inside living cells using viral mRNA, tRNA, and ribosomes.
d. Viruses cause the synthesis of specialized infectious elements.
e. Viruses multiply inside living cells.


Answer: c. Viruses multiply inside living cells using viral mRNA, tRNA, and ribosomes.

Biology & Microbiology

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A method used to link genetic markers with specific genes on chromosomes is called ____________________

Fill in the blank(s) with correct word

Biology & Microbiology

Certain species are very sensitive to disturbances to their environment, and therefore, can be used as an early warning system for environmental degradation that might not otherwise be noted. What are these species called?

a. keystone species b. invasive species c. indicator species d. island species e. adaptive species

Biology & Microbiology

The amount of enzyme activity in a cell that is homozygous for a mutant allele is 400 units. The amount of enzyme activity in a cell homozygous for the WT allele is 200 units. The amount of enzyme activity in a heterozygote is 300 units

What is the dominance relationship between the WT and mutant allele for the phenotype of amount of enzyme per cell? A) The WT allele is dominant. B) The mutant allele is dominant. C) The WT and mutant alleles are codominant. D) The WT and mutant alleles show incomplete dominance. E) It is impossible to determine from the information given.

Biology & Microbiology

Which of the following is not a modification to the mRNA?

A) Intron removal B) Promoter binding C) End capping D) Exon splicing

Biology & Microbiology